Street-sweeper



(No Model.) 3 Sheets-Sheet 1. A. BROWN.

STREET SWEEPER. No. 605,385. Patented June 7, 1898.

W/TNESSES Nd. M me fi IVVE/VTOR TTOHNEYS,

(No Model.) 3 Sheets-Sheet 2. A. BROWN.

STREET SWEBPER.

Patented June 7, 1898.

ATTORNEYS.

m: NORRIS PETERS cu. wom-u-moIT/isnwmom n. c.

(No Model.) 3 Sheets-Sheet 3 A. BROWN. STREET SWEBPER.

efl 95 a, 8 0 1. 7 a e L m fl g m a n e t ow D A W I 4 W/TNESSES miuonals PETERS so PHOTO-LXTHQ, WASHlNGTDN, n. c,

ALVIN BROWVN, OFAURORA, ILLINOIS.

STR EET-SWEEPER.

QPECIFICATION: forming part of Letters Patent No. 605,385, dated June'7, 1898. Application filed November 17, 1897. Serial No. 658,821. (Nomodel.)

To all whom it may concern:

Be it known that I, ALVIN BROWN, of Aurora, in the county of Kane andState of Illinois, have invented a new and Improved Street-Sweeper, ofwhich the following is a specification.

I have devised an improvement in streetsweepers for which I havereceived Letters Patent of the United States No. 589,692.

My present invention is a further improvementin the same line andincludes the several novel features hereinafter described and claimed. a

In the accompanying drawings, three sheets, Figure 1 is a side view ofthe machine. Fig. 2 is a plan view of the machine. Fig. 3 is alongitudinal section. Fig; 4 is a transverse vertical section on line 4.4, Fig. 2. Fig. 5 is a sectional View showing one of the brushtuftssecured to a cross-bar. Fig. 6 is a crosssection of such brush. Fig. 7is a detailvertical section illustrating the parts for ad justing thelower brush-shaft. Fig. 8 is a vertical section of parts for adj ustingthe dirt-pan.

The casing of the machine includes a rear portion A and front portion A,which are supported by a skeleton iron frame B. The

latter is in turn mounted on axles having the usual transporting-wheelsC and O, as shown in Fig. 1. L The casing A incloses the endlesstraveling brush 1, while the casing A incloses the tiltingdirt-receptacles 2. The brush 1 runs on pulleys 3 and i, which-are keyedon shafts 5 and 6, respectively, and it is so arranged that the lowerrun of the brush travels at about an angle of forty-five degrees. Therear wheels G are mounted on journals fixed in the iron frame B, whichis bolted to the outer side of the casing A. The upper brush-shaft 5(see. Figs. 1 and 2) carries on its outer ends pinions 7, which meshwith annular gears 8, attached to therear transporting-wheels Eachpinion 7 has a half-clutch 9, which is adapted to engage a similarclutch'lO. The latter is adapted to slide on the shaft 5, but has aspline connection therewith, so that both rotate together. It isapparent that when such clutch 10 is slid into engagement with clutch 9the shaft will be rotated, and therebydrive the brush in a directionindicatedby the arrows in Fig; 3. f g i The means for shifting theclutch 10 are as lever 11 and forces the clutches 9 into engageinentwith the pinion-clutches 10,'as before stated. Contrariwise by pushingon said rod 16 the lazy-tongs will be collapsed and the clutches 9thereby removed from engagement with the pinion-clutches and the travelof the brush 1 thereby arrested. r

The lower end of the brush may be adjusted higher or lower and thetension of the brush may also be regulated by the following means:

The lower brush-shaft 6 extends through slots 1 in the side of thecasing A and is supported in hangers 17, consisting of screw-threadedrods which work through 1ugs'18, formed integrally with brackets 19. Ahand-nut is applied to such rods 17 between the said lugs 18, (see Fig.7,) and by rotating the same it is apparent the rod will be adjustedvertically. By this means the brush may be raised out of contact withthe ground-surface or lowered into the working position shown in Fig. 3.It will be observed in Fig. 7 that the enlarged and milled rim of theaforesaid nut works through a slot in the bracket 19. The latter hasparallel horizontal flanges or lips 21, that engage the upper and lowersides of the framebar 22, and it also hasa central projection 23,-

that works in the groove or channel of said bar. Bolts 24: secure thebracket 19 to the bar22 and are adapted to slide horizontally in slotsformed in the latter. screw-rod 25 (see Figs. 1 and 2) serves as a meansforadj Listing the bracket19, and thereby-regulatingthetensionofthebrush2. Said screw works in the threaded lug26, formed on the bracket 19, and is adapted to rotate, but not slide inthe fixed lug 27, formed integrally with the frame-bar 22. i

The brush 1 is formed of two or more 'endless belts or chains,which'are' arranged parallel and connected by transverse bars 28.

A threaded parts the tufts are held' firmly in their sockets, but may bereadily detached when worn out and new ones substituted therefor withconvenience and despatch.

Beneath the brush (see Fig. 3) is arranged an inclined chute or pan 33for receiving the dust, dirt, or other loose material on the pavement orother surface. Such pan or chute is slightly curved longitudinally andarranged in general parallelism to the lower run of the brush.

attached to the side of the frame. It is apparent that by rotating suchscrews 36 the? rods :34 may be raised or lowered, as required, Asheetmetal apron 38, Fig. 3, is attached to the rod 34 and projects overthe adjacent edge of,

to adjust the pan to the brush 1.

the slot 39 in the front casing A to facilitate passage of the dirt frompan 33 into the receptacles 2.

sition, whatever be the adjustment of the pan 33. The lower end of thelatter is supported and adjusted by the following means: Rods and chains40, Figs. 1 and 2, connect the pan with horizontal pivoted levers 41,that extend forward into suitable proximity to the driver,

who by adjusting the same higher or lower: may raise or lower the pan33, as required. I

As a means for securing the levers in any adjustment I employ thepivoted links 42, Fig. 1, and clamp-nuts 43, whose operation is obvlous.

point of attachment of the suspending-chains 40, and its vertical sideswork within the easing A, so as to prevent escape of dirt or dustlaterally.

The dirt-receptacles 2, Figs. 3 and 4, are sheet-metal boxes open at thetop and one end. They are arranged horizontally in the casing A, withtheir closed ends opposite and contiguous, their open ends being outwardand adjacent to the hinged side doors 44, Fig. 1, of said casings A. Thereceptacles 2 are pivoted at their outer ends and allowed due adjustmentby means of pins 45, projecting from the sides of the casing A andworking in slots in the receptacles 2.

The means for hoisting and tilting the receptacles 2 are as follows:Arack-bar 46, Fig. 3, is arranged vertically and connected by rods 47with the inner ends of the recepta- Its upper end is hinged .on atransverse rod or shaft 34, whose ends project 5 through slots 35 in thecasing A, as shown in I Fig. 8, and are supported by threaded rods orshort screws 36, that work in fixed lugs 37,

It will be observed that this apron 38 is self-adjusting to its workingpocles 2 at the bottom, and extends through a slot 48 in the top casingA. A gear49, having a crank 50, engages the rack bar 46, and

thelatter is provided on its rear side with ratchet-teeth to provide forengagement of a fixed pawl 52 therewith. By rotating the crank 50 therack-bar 46 may be raised and the receptacles 2 thereby tilted to causedischarge of their contents laterally or at the side of the casing A,whose hinged side doors 53 are first opened for the purpose. The hingedand spring-pressed pawl 52 follows the ratchet and automatically locksthe rack-bar at any point to which it may be raised.

To provide a lateral resistance-guide for the rack-bar, I employantifriction-rollers 54, Fig. 3, which are journaled in a bracketsecured to the top of easing A between the pawl and rack-bar and work incontact with lateral flanges of the latter.

As shown in Figs. 1 and 3, a disk 55 covers the slot 56 in the casing Awhere the brush shaft 6 passes through, and thus prevents escape ofdust. The disk is mounted on the said shaft so as to move with it.

Having thus described my inventiomwhat I claim, and desire to secure byLetters Patent, is-

1. In a street-sweeping machine, the combination with the rear casing, arotary brush arranged within it and a dirt-receptacle in the frontcasing, of a dirt-pan arranged under said rear casing and brush, ahinged apron at the front end of the pan, a transverse support for theapron and pan, vertical slots in the casing through which said supportsproject, and means for clamping the support in any vertical adjustment,as specified.

2. In a street-sweeping machine, the combination with the casing, .anendless traveling brush-belt, front and rear sprocket-wheels, on whichsuch belt runs, the shaft of such front wheels projecting through theslotted sides of the casing, frame-bars extending along the sides of thelatter and having a As shown in Figs. 1 and 3, the rear end of j the panor chute 33 is extended beyond the lengthwise slot, brackets connectedwith the shaft ends and having a projecting portion or rib that slidesin the slots of said bars, a screw-bolt Working horizontally in athreaded lug on such bars, and connected with the aforesaid bracket, foradjusting the latter as described, for the purpose of regulating thetension of the belt, asspecified.

3. In a street-sweeping machine, the combination with thecasing,frame,endless brush, and front and rear brush-shafts, of themeans for adjusting the rear shaft Vertically,.which consists ofvertical hangers or threaded rods, fixed perforated lugs to receive saidrods and nuts applied to the latter and arranged in the through saidsockets and means for securing the ends of such rods to the aforesaidbars,

substantially as shown and described.

5. In-a street-sweeping machine, the combination with parallelcarrier-chains, transverse bars which connect them as shown, a series ofbrush-sockets attached to said bars, and, having end slots, and tuftsofwires or rods passing through said slots and the brushes proper andhaving eyes at their extremities, and screws passing through the saideyes, for securing the rod and brushes, as specified.

6. In a street-sweeping machine, the com bination, with a casing havingsides adapted to open as desired, of two trays arranged transverselytherein and hinged at their outer ends, their closed inner ends-abut-ting as shown, and a hoisting device connected with such innerends for tilting and discharging both trays simultaneously, in oppositedirections laterally, as shown and described.

7. In a street-sweeping machine, the combination with a casing and brushand traylike dirt-receptacles arranged Within said casing and hinged attheir open outer ends,

a ALVIN BROWN.

Witnesses: CHARLES I. MCNETT,

O. H. I'IITCHOOCK.

